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Unread 08-27-2014, 01:53 AM   #1
Stedoha
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Join Date: Aug 2014
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Problem to start

My renegade '92 start always at second or third attempt .

Do you have any suggestion?

Thanks
Stefano


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Unread 08-27-2014, 07:25 AM   #2
mike134
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1989 YJ Wrangler 
 
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Location: Cleveland, OH
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Could you clarify: Do you mean that your first attempt at starting the vehicle always fails? so you turn the key for 5-6 seconds, then wait, then try a second time and it starts?

If so, many people have this problem.

You should start by checking your fuel pressure at the fuel rail, Borrow a pressure gauge and connect it to the shrader valve on the fuel rail, it should be very easy to do. It should be above 30 psi while at idle. Turn the engine off, it should be above 10 psi after 30 minutes. Come back and tell us the results.
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Unread 08-28-2014, 02:05 AM   #3
Stedoha
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Yes this is the problem
Thank you for the help
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Unread 08-28-2014, 06:16 AM   #4
Stedoha
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There is any possibility to increase the pressure? Or I need to replace the regulator?
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Unread 08-28-2014, 07:05 AM   #5
Old4X
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http://www.jeepforum.com/forum/f12/c...rs-ecu-492597/
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418 miles on 19 gallons of gas. Can't beat the BBD !
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Unread 08-28-2014, 07:55 AM   #6
mike134
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1989 YJ Wrangler 
 
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I'd check the fuel pressure before doing the brain surgery since it is fairly painless, takes about 10 minutes. Go to autozone and borrow the fuel pressure gauge, its free but you have to leave a deposit.

It wouldn't hurt to replace the capacitors on the ECU like Old4x suggests anyway, if they aren't bad now, they will be in the future.
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Unread 09-02-2014, 12:12 AM   #7
Stedoha
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I just change the fuel press regulator, I still have the problem to start, 2/3 attempt .
More suggestion?
Tks
Stefano
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Unread 09-02-2014, 12:17 AM   #8
mike134
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hmm, did you actually check the pressure? or just replace the part?
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Unread 09-02-2014, 12:42 AM   #9
Stedoha
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Humm, you catch me! I just replace....
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Unread 09-02-2014, 08:17 AM   #10
Que89YJ
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1989 YJ Wrangler 
 
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Location: Detroit, Michigan
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You need to check the pressure. There are several pressure issues that it could be. 31 psi idle, 39 psi with the vacuum line disconnected at the pressure regulator. reconnect the line and turn the key off and it should stay above 20 psi for longer then 20 minutes.

Also use this thread and check your fault codes. Post what you get.
http://www.jeepforum.com/forum/f12/h...codes-1257145/
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